Maria Pia Ionata
type: MusicGroup
genre: classical
genre: opera
popularity: 28
followers: 83
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x46693c86ada72971de94a9ec6a17201c572d3959728feb2c6b2816c58ef7e243
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/90ad509e-2dbf-4dad-abd4-7461a2bddde1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/90ad509e-2dbf-4dad-abd4-7461a2bddde1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/90ad509e-2dbf-4dad-abd4-7461a2bddde1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46693c86ada72971de94a9ec6a17201c572d3959728feb2c6b2816c58ef7e243. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90ad509e-2dbf-4dad-abd4-7461a2bddde1.json and https://artists.proofprofile.net/proofs/artist/90ad509e-2dbf-4dad-abd4-7461a2bddde1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
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album: Mozart: The Marriage of Figaro (Highlights)
  type: MusicAlbum
  date published: 2000-01-13
album: 6 Morceaux Op 51 No 5 Romance
  type: MusicAlbum
  date published: 2023-02-28
album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act I Scene 1: Duettino - Cinque, Dieci...
    type: MusicRecording
    duration: PT2M58S
    duration ms: 178106
    explicit: false
    by artist: Donato Di Stefano
    by artist: Jozsef Mukk
    by artist: Maria Pia Ionata
    by artist: Natale de Carolis
    by artist: Ingrid Kertesi
    by artist: Roberto Frontali
    by artist: Patrizia Pace
    by artist: Hungarian State Opera Orchestra
    by artist: Wolfgang Amadeus Mozart
    by artist: Lorenzo Da Ponte
    in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
      type: MusicAlbum
      date published: 2000-01-01
    isrc code: HKI199736802
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-09T18:48:55+00:00
    additional property: CopyrightChainExplorerURL
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953520
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736802
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T13:32:09Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f19fc95d8e7a407813bcdb78af02c5cdd845740217c24b618fd7e37d21e00. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736802.
      date published: 2026-06-13T13:32:09Z
    audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act I Scene 1: Duettino - Cinque, Dieci...
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      additional property: Tempo (BPM)
        type: PropertyValue
        value: 127.808
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
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      additional property: Speechiness
        type: PropertyValue
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      additional property: Acousticness
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      additional property: Instrumentalness
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      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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      additional property: Key Name
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        value: D
      additional property: Mode Name
        type: PropertyValue
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  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act I Scene 2: Cavatina - Se Vuol Ballare, Signor Contino
    type: MusicRecording
    duration: PT2M35S
    duration ms: 155240
    explicit: false
    by artist: Donato Di Stefano
    by artist: Maria Pia Ionata
    by artist: Roberto Frontali
    by artist: Ingrid Kertesi
    by artist: Natale de Carolis
    by artist: Hungarian State Opera Orchestra
    by artist: Jozsef Mukk
    by artist: Patrizia Pace
    by artist: Wolfgang Amadeus Mozart
    by artist: Lorenzo Da Ponte
    in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
      type: MusicAlbum
      date published: 2000-01-01
    isrc code: HKI199736804
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T13:32:09Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15703b2ee085e8061ef16a76185aa083ed965e2f94e39b8e2efbf615f304729. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736804.
      date published: 2026-06-13T13:32:09Z
    audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act I Scene 2: Cavatina - Se Vuol Ballare, Signor Contino
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.832
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
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      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
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  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act I Scene 3: Aria - La Vendetta
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act I Scene 4: Aria - Nos So Piu Cosa Son
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act I Scene 8: Aria - Non Piu Andrai
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act II Scene 1: Cavatina - Porgi Amor
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act II Scene 3: Canzona - Voi, Che Sapete
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act II Scene 3: Aria - Venite, Inginocchiatevi
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act II Scene 6: Terzetto - Susanna, Or Via Sortite?
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 4: Recitativo - Hai Gia Vinta Causa!
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 4: Aria - Vedro, Menter'io Sospiro
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 5: Sestetto - Riconosci In Questo Amplesso
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 8: Recitativo - E Susanna Non Vien!
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 8: Aria - Dove Sono I Bei Momenti?
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 10: Duettino - Sull'aria
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 8: Recitativo - Tutto E Disposto
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 8: Aria - Aprite Un Po' Quegl'occhi
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 10: Recitativo - Giunse Al Fin Il Momento
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 10: Aria - Deh Vieni Non Tardar
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 11: Finale - ... Pace, Pace, Mio Dolce Tesoro!
  track: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Final Scene: Gente! Gente!
album: Great Composers in Words & Music: Wolfgang Amadeus Mozart
album: Spectacular Soprano: Best Loved Opera Arias
album: Klassik ohne Krise: Grandioser Gesang
album: Opera's Greatest Moments

Time Signature
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Danceability
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Energy
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Speechiness
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Acousticness
type: PropertyValue
value: 0.987

Instrumentalness
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value: 0.003

Liveness
type: PropertyValue
value: 0.093

Valence (Positivity)
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value: 0.378

Loudness (dB)
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value: -21.906

Key Name
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value: F

Mode Name
type: PropertyValue
value: Major

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act I Scene 3: Aria - La Vendetta
type: MusicRecording
duration: PT3M10S
duration ms: 190866
explicit: false
by artist: Donato Di Stefano
by artist: Hungarian State Opera Orchestra
by artist: Natale de Carolis
by artist: Ingrid Kertesi
by artist: Jozsef Mukk
by artist: Roberto Frontali
by artist: Patrizia Pace
by artist: Maria Pia Ionata
by artist: Wolfgang Amadeus Mozart
by artist: Lorenzo Da Ponte
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736805
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T15:58:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0f5b84a6fa97941682a7887f7972ee12b07dce50f7592f18aff014dcf12136d9
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736805
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5b84a6fa97941682a7887f7972ee12b07dce50f7592f18aff014dcf12136d9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736805.
  date published: 2026-07-02T03:55:08Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act I Scene 3: Aria - La Vendetta
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Mode Name
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type: MusicRecording
duration: PT3M27S
duration ms: 207866
explicit: false
by artist: Donato Di Stefano
by artist: Patrizia Pace
by artist: Roberto Frontali
by artist: Maria Pia Ionata
by artist: Hungarian State Opera Orchestra
by artist: Ingrid Kertesi
by artist: Natale de Carolis
by artist: Jozsef Mukk
by artist: Lorenzo Da Ponte
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736806
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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  value: 2026-06-18T16:59:42+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736806
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cc0abcc752ab152d6e11be4bf62f56a896792c1fc09797d7cecabbc1293974. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736806.
  date published: 2026-07-02T03:30:09Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act I Scene 4: Aria - Nos So Piu Cosa Son
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  additional property: Tempo (BPM)
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Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act I Scene 8: Aria - Non Piu Andrai
type: MusicRecording
duration: PT3M52S
duration ms: 232760
explicit: false
by artist: Donato Di Stefano
by artist: Patrizia Pace
by artist: Jozsef Mukk
by artist: Ingrid Kertesi
by artist: Natale de Carolis
by artist: Hungarian State Opera Orchestra
by artist: Roberto Frontali
by artist: Maria Pia Ionata
by artist: Lorenzo Da Ponte
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb34e52c66c934d3a3af5f90ad56cf01ff5c9b4c412482f01b3e08adbfe8cf55. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736807.
  date published: 2026-06-13T12:53:06Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act I Scene 8: Aria - Non Piu Andrai
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 136.435
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.493
  additional property: Energy
    type: PropertyValue
    value: 0.215
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.985
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.036
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.564
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.917
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act II Scene 1: Cavatina - Porgi Amor
type: MusicRecording
duration: PT3M39S
duration ms: 219666
explicit: false
by artist: Donato Di Stefano
by artist: Ingrid Kertesi
by artist: Patrizia Pace
by artist: Maria Pia Ionata
by artist: Jozsef Mukk
by artist: Hungarian State Opera Orchestra
by artist: Roberto Frontali
by artist: Natale de Carolis
by artist: Lorenzo Da Ponte
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736808
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T03:56:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd7618bd51f2d686f6e637694c7210b4dfab0adfb38ed637b00fb5bcb55864fe8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736808
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7618bd51f2d686f6e637694c7210b4dfab0adfb38ed637b00fb5bcb55864fe8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736808.
  date published: 2026-06-13T13:32:09Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act II Scene 1: Cavatina - Porgi Amor
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.801
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.224
  additional property: Energy
    type: PropertyValue
    value: 0.028
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.982
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.015
  additional property: Liveness
    type: PropertyValue
    value: 0.096
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.054
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.78
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act II Scene 3: Canzona - Voi, Che Sapete
type: MusicRecording
duration: PT3M12S
duration ms: 192040
explicit: false
by artist: Donato Di Stefano
by artist: Patrizia Pace
by artist: Hungarian State Opera Orchestra
by artist: Ingrid Kertesi
by artist: Maria Pia Ionata
by artist: Jozsef Mukk
by artist: Natale de Carolis
by artist: Roberto Frontali
by artist: Lorenzo Da Ponte
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736809
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T14:03:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf30e58d91b385cea930cf29ac9629eefa3807b97d6de4dcdb1cba62ce996a1f3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736809
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30e58d91b385cea930cf29ac9629eefa3807b97d6de4dcdb1cba62ce996a1f3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736809.
  date published: 2026-06-13T12:53:06Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act II Scene 3: Canzona - Voi, Che Sapete
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 118.876
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.335
  additional property: Energy
    type: PropertyValue
    value: 0.051
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.985
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.177
  additional property: Liveness
    type: PropertyValue
    value: 0.156
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.091
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.186
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act II Scene 3: Aria - Venite, Inginocchiatevi
type: MusicRecording
duration: PT3M9S
duration ms: 189666
explicit: false
by artist: Donato Di Stefano
by artist: Ingrid Kertesi
by artist: Roberto Frontali
by artist: Jozsef Mukk
by artist: Natale de Carolis
by artist: Maria Pia Ionata
by artist: Patrizia Pace
by artist: Hungarian State Opera Orchestra
by artist: Lorenzo Da Ponte
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736810
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-11T03:13:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x36b67ab55284ffa45ad68bd0574be631b0a5ec10a1aff4f799df0f5c1e82a76d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736810
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b67ab55284ffa45ad68bd0574be631b0a5ec10a1aff4f799df0f5c1e82a76d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736810.
  date published: 2026-06-13T13:32:09Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act II Scene 3: Aria - Venite, Inginocchiatevi
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 94.349
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.343
  additional property: Energy
    type: PropertyValue
    value: 0.041
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.979
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.067
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.175
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.482
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act II Scene 6: Terzetto - Susanna, Or Via Sortite?
type: MusicRecording
duration: PT3M35S
duration ms: 215733
explicit: false
by artist: Donato Di Stefano
by artist: Maria Pia Ionata
by artist: Roberto Frontali
by artist: Patrizia Pace
by artist: Jozsef Mukk
by artist: Natale de Carolis
by artist: Ingrid Kertesi
by artist: Hungarian State Opera Orchestra
by artist: Wolfgang Amadeus Mozart
by artist: Lorenzo Da Ponte
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736811
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T14:40:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9cfe6d84c1eda89e08ef130dabde3182993bbac63ead49fb2bec3513658efd31
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736811
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfe6d84c1eda89e08ef130dabde3182993bbac63ead49fb2bec3513658efd31. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736811.
  date published: 2026-07-02T03:55:08Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act II Scene 6: Terzetto - Susanna, Or Via Sortite?
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.941
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.387
  additional property: Energy
    type: PropertyValue
    value: 0.184
  additional property: Speechiness
    type: PropertyValue
    value: 0.061
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.114
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.194
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.698
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 4: Recitativo - Hai Gia Vinta Causa!
type: MusicRecording
duration: PT1M34S
duration ms: 94760
explicit: false
by artist: Donato Di Stefano
by artist: Maria Pia Ionata
by artist: Patrizia Pace
by artist: Roberto Frontali
by artist: Ingrid Kertesi
by artist: Natale de Carolis
by artist: Jozsef Mukk
by artist: Hungarian State Opera Orchestra
by artist: Wolfgang Amadeus Mozart
by artist: Lorenzo Da Ponte
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736812
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T14:32:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc203b2c644f51daf58eabfd8f89771b974c8bdbfaabf865ccd84847db2c9883e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736812
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc203b2c644f51daf58eabfd8f89771b974c8bdbfaabf865ccd84847db2c9883e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736812.
  date published: 2026-07-02T05:09:12Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 4: Recitativo - Hai Gia Vinta Causa!
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.943
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.389
  additional property: Energy
    type: PropertyValue
    value: 0.155
  additional property: Speechiness
    type: PropertyValue
    value: 0.093
  additional property: Acousticness
    type: PropertyValue
    value: 0.967
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.544
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.147
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.986
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 4: Aria - Vedro, Menter'io Sospiro
type: MusicRecording
duration: PT3M32S
duration ms: 212040
explicit: false
by artist: Donato Di Stefano
by artist: Roberto Frontali
by artist: Patrizia Pace
by artist: Hungarian State Opera Orchestra
by artist: Natale de Carolis
by artist: Maria Pia Ionata
by artist: Ingrid Kertesi
by artist: Jozsef Mukk
by artist: Lorenzo Da Ponte
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736813
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T16:43:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcca37f31129b01fbe16b1c51338a204edb72931f297bac33e1098d8cf76063cf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736813
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca37f31129b01fbe16b1c51338a204edb72931f297bac33e1098d8cf76063cf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736813.
  date published: 2026-07-02T05:09:12Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 4: Aria - Vedro, Menter'io Sospiro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.262
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.296
  additional property: Energy
    type: PropertyValue
    value: 0.186
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.111
  additional property: Liveness
    type: PropertyValue
    value: 0.127
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.378
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.472
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 5: Sestetto - Riconosci In Questo Amplesso
type: MusicRecording
duration: PT5M30S
duration ms: 330466
explicit: false
by artist: Donato Di Stefano
by artist: Hungarian State Opera Orchestra
by artist: Patrizia Pace
by artist: Jozsef Mukk
by artist: Maria Pia Ionata
by artist: Ingrid Kertesi
by artist: Natale de Carolis
by artist: Roberto Frontali
by artist: Wolfgang Amadeus Mozart
by artist: Lorenzo Da Ponte
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736814
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T02:53:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x153131d05f6beabc7b99004fac86cf05f03139d50f86d404053647e385692331
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736814
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153131d05f6beabc7b99004fac86cf05f03139d50f86d404053647e385692331. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736814.
  date published: 2026-07-02T03:55:08Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 5: Sestetto - Riconosci In Questo Amplesso
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.487
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.277
  additional property: Energy
    type: PropertyValue
    value: 0.151
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.006
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.266
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.038
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 8: Recitativo - E Susanna Non Vien!
type: MusicRecording
duration: PT1M45S
duration ms: 105360
explicit: false
by artist: Donato Di Stefano
by artist: Maria Pia Ionata
by artist: Hungarian State Opera Orchestra
by artist: Roberto Frontali
by artist: Natale de Carolis
by artist: Jozsef Mukk
by artist: Patrizia Pace
by artist: Ingrid Kertesi
by artist: Lorenzo Da Ponte
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736815
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T03:52:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2fa286d343b2bace705560ae7056011e6ccb1c31f9b03374eb6f70d38f211b4f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736815
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa286d343b2bace705560ae7056011e6ccb1c31f9b03374eb6f70d38f211b4f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736815.
  date published: 2026-07-02T03:30:09Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 8: Recitativo - E Susanna Non Vien!
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.816
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.355
  additional property: Energy
    type: PropertyValue
    value: 0.046
  additional property: Speechiness
    type: PropertyValue
    value: 0.076
  additional property: Acousticness
    type: PropertyValue
    value: 0.972
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.166
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.059
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.854
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 8: Aria - Dove Sono I Bei Momenti?
type: MusicRecording
duration: PT5M1S
duration ms: 301466
explicit: false
by artist: Donato Di Stefano
by artist: Patrizia Pace
by artist: Jozsef Mukk
by artist: Natale de Carolis
by artist: Roberto Frontali
by artist: Hungarian State Opera Orchestra
by artist: Maria Pia Ionata
by artist: Ingrid Kertesi
by artist: Lorenzo Da Ponte
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736816
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T07:34:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2b7e61422abb3fc38744888543307bea50d340e99356a1e300b0dbc33dae4aef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736816
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7e61422abb3fc38744888543307bea50d340e99356a1e300b0dbc33dae4aef. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736816.
  date published: 2026-07-02T03:55:08Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 8: Aria - Dove Sono I Bei Momenti?
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.266
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.246
  additional property: Energy
    type: PropertyValue
    value: 0.09
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.985
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.091
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.063
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.484
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 10: Duettino - Sull'aria
type: MusicRecording
duration: PT2M39S
duration ms: 159373
explicit: false
by artist: Donato Di Stefano
by artist: Maria Pia Ionata
by artist: Patrizia Pace
by artist: Ingrid Kertesi
by artist: Natale de Carolis
by artist: Hungarian State Opera Orchestra
by artist: Roberto Frontali
by artist: Jozsef Mukk
by artist: Lorenzo Da Ponte
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736817
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T12:39:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaace1b7a6593ec59efc7c2adf3d7dceaa18ce97c43ae818864449b0923b90dfd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736817
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaace1b7a6593ec59efc7c2adf3d7dceaa18ce97c43ae818864449b0923b90dfd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736817.
  date published: 2026-06-13T13:32:09Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act III Scene 10: Duettino - Sull'aria
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.643
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.214
  additional property: Energy
    type: PropertyValue
    value: 0.049
  additional property: Speechiness
    type: PropertyValue
    value: 0.067
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.13
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.152
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.666
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 8: Recitativo - Tutto E Disposto
type: MusicRecording
duration: PT1M26S
duration ms: 86533
explicit: false
by artist: Donato Di Stefano
by artist: Patrizia Pace
by artist: Maria Pia Ionata
by artist: Jozsef Mukk
by artist: Hungarian State Opera Orchestra
by artist: Roberto Frontali
by artist: Ingrid Kertesi
by artist: Natale de Carolis
by artist: Wolfgang Amadeus Mozart
by artist: Lorenzo Da Ponte
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736818
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T05:04:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9dc7d69642c08cff27e7045486d64e26a0f875fc84a789aee172c535bb0a7667
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736818
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc7d69642c08cff27e7045486d64e26a0f875fc84a789aee172c535bb0a7667. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736818.
  date published: 2026-07-02T03:55:08Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 8: Recitativo - Tutto E Disposto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 166.583
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.339
  additional property: Energy
    type: PropertyValue
    value: 0.132
  additional property: Speechiness
    type: PropertyValue
    value: 0.107
  additional property: Acousticness
    type: PropertyValue
    value: 0.969
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.654
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.167
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.508
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 8: Aria - Aprite Un Po' Quegl'occhi
type: MusicRecording
duration: PT2M49S
duration ms: 169866
explicit: false
by artist: Donato Di Stefano
by artist: Patrizia Pace
by artist: Jozsef Mukk
by artist: Roberto Frontali
by artist: Ingrid Kertesi
by artist: Hungarian State Opera Orchestra
by artist: Maria Pia Ionata
by artist: Natale de Carolis
by artist: Wolfgang Amadeus Mozart
by artist: Lorenzo Da Ponte
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
  type: MusicAlbum
  date published: 2000-01-01
isrc code: HKI199736819
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T02:22:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3a5a1adcffa02a3df350e1ef729a3945d84b1a71611b712ebeb866610d8cee36
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736819
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5a1adcffa02a3df350e1ef729a3945d84b1a71611b712ebeb866610d8cee36. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736819.
  date published: 2026-07-02T03:30:09Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 8: Aria - Aprite Un Po' Quegl'occhi
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.977
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.477
  additional property: Energy
    type: PropertyValue
    value: 0.253
  additional property: Speechiness
    type: PropertyValue
    value: 0.089
  additional property: Acousticness
    type: PropertyValue
    value: 0.988
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.134
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.538
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.557
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 10: Recitativo - Giunse Al Fin Il Momento
type: MusicRecording
duration: PT1M26S
duration ms: 86533
explicit: false
by artist: Donato Di Stefano
by artist: Maria Pia Ionata
by artist: Hungarian State Opera Orchestra
by artist: Patrizia Pace
by artist: Ingrid Kertesi
by artist: Natale de Carolis
by artist: Roberto Frontali
by artist: Jozsef Mukk
by artist: Lorenzo Da Ponte
by artist: Wolfgang Amadeus Mozart
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
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Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 10: Aria - Deh Vieni Non Tardar
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by artist: Donato Di Stefano
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by artist: Hungarian State Opera Orchestra
by artist: Roberto Frontali
by artist: Jozsef Mukk
by artist: Ingrid Kertesi
by artist: Maria Pia Ionata
by artist: Patrizia Pace
by artist: Wolfgang Amadeus Mozart
by artist: Lorenzo Da Ponte
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
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  date published: 2000-01-01
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 10: Aria - Deh Vieni Non Tardar
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Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 11: Finale - ... Pace, Pace, Mio Dolce Tesoro!
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duration: PT1M57S
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by artist: Donato Di Stefano
by artist: Jozsef Mukk
by artist: Patrizia Pace
by artist: Natale de Carolis
by artist: Roberto Frontali
by artist: Hungarian State Opera Orchestra
by artist: Ingrid Kertesi
by artist: Maria Pia Ionata
by artist: Lorenzo Da Ponte
by artist: Wolfgang Amadeus Mozart
in album: Mozart: Le Nozze Di Figaro, ‘the Marriage Of Figaro’ (Highlights)
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  date published: 2000-01-01
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additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Act IV Scene 11: Finale - ... Pace, Pace, Mio Dolce Tesoro!
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Le Nozze Di Figaro (The Marriage Of Figaro), K. 492: Final Scene: Gente! Gente!
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by artist: Ingrid Kertesi
by artist: Hungarian State Opera Orchestra
by artist: Roberto Frontali
by artist: Natale de Carolis
by artist: Maria Pia Ionata
by artist: Lorenzo Da Ponte
by artist: Wolfgang Amadeus Mozart
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e407e9f47a12198897c7395296509557559e33964104e1b1d19bfc9ee0446c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199736823.
  date published: 2026-07-02T03:30:09Z
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Great Composers in Words & Music: Wolfgang Amadeus Mozart
type: MusicAlbum
date published: 2022-05-13

Spectacular Soprano: Best Loved Opera Arias
type: MusicAlbum
date published: 2021-12-03

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type: MusicAlbum
date published: 2013-10-29

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type: MusicAlbum
date published: 2009-02-24